Since we are all very good at analyzing other people's rescues I thought it'd be fair to put up one of my own for critique. It occurred last week, just outside Chicago in Cook County, Il. Backstory: Guy walked down a 20 ft + steep embankment full of basketball sized boulders to the river to go fishing. Just at the river's edge, he slipped on the unstable boulders and broke his fibula. We were dispatched as an ambulance only, and called for additional help in form of truck, engine, and BC (9 total personnel). Crew elected to utilize truck as high directional (previous great thread). Crew on scene included two TRT team members, as well 3 others with SPRAT level 1 and Rope Operations training. Crew decided not to pull the hook on a TRT call, which would have complicated the scene with incoming crews and was deemed unnecessary. From the time the truck pulled up on scene to time pt. was loaded into ambo was exactly 30 minutes. During the pt. packaging phase, crew overturned a boulder and stirred up a bee's nest, causing multiple stings to both pt. and rescuers, so there was some giddyup involved. Stokes was raised above the level of the bridge we were working off of, then lowered and tagged over to bridge level. Rope systems and operations went very smooth, with no problems....But, there's always room for improvement and certainly some things were not done as well as they could have been, so here goes
Main Anchor: Truck rear outrigger (vertical column,) 2007 Pierce HD Tower Ladder Steel 100' 1000" tip load
Belay Anchor: Truck rear manufactured anchor point.
AHD: Manufactured anchor points on bottom of basket. 2 points, (1 for main, 1 for belay) each with a SWL of 500lbs. 10:1 safety factor
Mainline: 1/2" anchored through an ID, up through redirected 2" pulley, down to stokes
Belay line: 1/2" Munter (GASP!) on steel Pear-Shaped carabine, up through redirected 2" pully, down to stokes
Stokes rigging: Traditional 4 legged adjustable bridle w/bull ring. Main and Belay attached via figure 8 knots to carabiners to bull ring. (again, not the most progressive method here, but worked just fine)
Hauling System: 4:1 piggybacked on to mainline, progress captured with ID
Lowering system: ID
Tag line: Single line with double figure 8 knot, attached to stokes at pt. shoulder and knee level.
See Picture Attached.
Please let me know any comments or concerns you might. Hopefully this can generate some good discussion on modern best practices. Im also curious about how to determine the load generated at the high directional during the hauling phase with this particular set up.